Meyer's MS485, Operator'S Manual / Parts Book

Page: 28 / 88

28 | P a g e M o d e l M S 4 8 5
ADJUSTMENTS
A1
- INSPECT APRON TENSION DAILY!!
FAILURE TO KEEP THE APRON PROPERLY TENSIONED WILL RESULT IN POOR PERFORMANCE AND EXCESSIVE
CHAIN SAG, CAUSING SEVERE DAMAGE TO THE APRON AND BEATER ASSEMBLY.
A. The standard tensioner system is adjusted by (4) bolts located at the front of the spreader. Turn the
bolts to pull the tensioner blocks forward and remove all slack. Torque bolts to approximately 40 ft-lbs.
Check that there is no chain sag at the front or rear of the spreader. Tension evenly so that chain runs
centered. When there is no more adjustment left, loosen the bolts and push in as far as they will go.
Then, remove links from each chain and readjust.
B. The automatic tensioner system maintains apron tension but must be checked periodically to ensure
the cylinders haven’t reached their max travel. Check indicators at each side of the front tensioner
case. If cylinders are at or near max travel, perform the following:
1. Relieve all hydraulic pressure from front supply lines.
2. Place drain hose at RH Front of spreader in a bucket.
3. SLOWLY open drain valve to relieve pressure trapped in tensioner system.
4. Check pressure gauge, verify pressure has dropped to 0 PSI.
5. Once pressure is released, fully open drain valve and manually push the cylinders / tensioner
blocks in. Hydraulic fluid will empty into bucket.
6. Remove links from chain and reconnect.
7. When repairs are complete, FULLY CLOSE DRAIN VALVE.
8. Run the apron. Tensioner cylinders should extend and tension the chain before the rear drive
sprockets start to turn.